yui-ext.js

一个使用yui-ext库

/*
 * yui-ext 0.33
 * Copyright(c) 2006, Jack Slocum.
 */


YAHOO.namespace('ext','ext.util','ext.grid');YAHOO.ext.Strict=(document.compatMode=='CSS1Compat');YAHOO.ext.SSL_SECURE_URL='javascript:false';window.undefined=undefined;Function.prototype.createCallback=function(){var args=arguments;var method=this;return function(){return method.apply(window,args);};};Function.prototype.createDelegate=function(obj,args,appendArgs){var method=this;return function(){var callArgs=args||arguments;if(appendArgs===true){callArgs=Array.prototype.slice.call(arguments,0);callArgs=callArgs.concat(args);}else if(typeof appendArgs=='number'){callArgs=Array.prototype.slice.call(arguments,0);var applyArgs=[appendArgs,0].concat(args);Array.prototype.splice.apply(callArgs,applyArgs);}
return method.apply(obj||window,callArgs);};};Function.prototype.defer=function(millis,obj,args,appendArgs){return setTimeout(this.createDelegate(obj,args,appendArgs),millis);};Function.prototype.createSequence=function(fcn,scope){if(typeof fcn!='function'){return this;}
var method=this;return function(){var retval=method.apply(this||window,arguments);fcn.apply(scope||this||window,arguments);return retval;};};YAHOO.util.Event.on(window,'unload',function(){delete Function.prototype.createSequence;delete Function.prototype.defer;delete Function.prototype.createDelegate;delete Function.prototype.createCallback;delete Function.prototype.createInterceptor;});Function.prototype.createInterceptor=function(fcn,scope){if(typeof fcn!='function'){return this;}
var method=this;return function(){fcn.target=this;fcn.method=method;if(fcn.apply(scope||this||window,arguments)===false){return;}
return method.apply(this||window,arguments);;};};YAHOO.ext.util.Browser=new function(){var ua=navigator.userAgent.toLowerCase();this.isOpera=(ua.indexOf('opera')>-1);this.isSafari=(ua.indexOf('webkit')>-1);this.isIE=(window.ActiveXObject);this.isIE7=(ua.indexOf('msie 7')>-1);this.isGecko=!this.isSafari&&(ua.indexOf('gecko')>-1);if(ua.indexOf("windows")!=-1||ua.indexOf("win32")!=-1){this.isWindows=true;}else if(ua.indexOf("macintosh")!=-1){this.isMac=true;}
if(this.isIE&&!this.isIE7){try{document.execCommand("BackgroundImageCache",false,true);}catch(e){}}}();YAHOO.print=function(arg1,arg2,etc){if(!YAHOO.ext._console){var cs=YAHOO.ext.DomHelper.insertBefore(document.body.firstChild,{tag:'div',style:'width:250px;height:350px;overflow:auto;border:3px solid #c3daf9;'+'background:white;position:absolute;right:5px;top:5px;'+'font:normal 8pt arial,verdana,helvetica;z-index:50000;padding:5px;'},true);new YAHOO.ext.Resizable(cs,{transparent:true,handles:'all',pinned:true,adjustments:[0,0],wrap:true,draggable:(YAHOO.util.DD?true:false)});cs.on('dblclick',cs.hide);YAHOO.ext._console=cs;}
var msg='';for(var i=0,len=arguments.length;i<len;i++){msg+=arguments[i]+'<hr noshade style="color:#eeeeee;" size="1">';}
YAHOO.ext._console.dom.innerHTML=msg+YAHOO.ext._console.dom.innerHTML;YAHOO.ext._console.dom.scrollTop=0;YAHOO.ext._console.show();};YAHOO.printf=function(format,arg1,arg2,etc){var args=Array.prototype.slice.call(arguments,1);YAHOO.print(format.replace(/\{\{[^{}]*\}\}|\{(\d+)(,\s*([\w.]+))?\}/g,function(m,a1,a2,a3){if(m.chatAt=='{'){return m.slice(1,-1);}
var rpl=args[a1];if(a3){var f=eval(a3);rpl=f(rpl);}
return rpl?rpl:'';}));}
YAHOO.util.CustomEvent.prototype.fireDirect=function(){var len=this.subscribers.length;for(var i=0;i<len;++i){var s=this.subscribers[i];if(s){var scope=(s.override)?s.obj:this.scope;if(s.fn.apply(scope,arguments)===false){return false;}}}
return true;};YAHOO.extendX=function(subclass,superclass,overrides){YAHOO.extend(subclass,superclass);subclass.override=function(o){YAHOO.override(subclass,o);};if(!subclass.prototype.override){subclass.prototype.override=function(o){for(var method in o){this[method]=o[method];}};}
if(overrides){subclass.override(overrides);}};YAHOO.override=function(origclass,overrides){if(overrides){var p=origclass.prototype;for(var method in overrides){p[method]=overrides[method];}}};YAHOO.ext.util.DelayedTask=function(fn,scope,args){var timeoutId=null;this.delay=function(delay,newFn,newScope,newArgs){if(timeoutId){clearTimeout(timeoutId);}
fn=newFn||fn;scope=newScope||scope;args=newArgs||args;timeoutId=setTimeout(fn.createDelegate(scope,args),delay);};this.cancel=function(){if(timeoutId){clearTimeout(timeoutId);timeoutId=null;}};};YAHOO.ext.KeyMap=function(el,config,eventName){this.el=getEl(el);this.eventName=eventName||'keydown';this.bindings=[];if(config instanceof Array){for(var i=0,len=config.length;i<len;i++){this.addBinding(config[i]);}}else{this.addBinding(config);}
this.keyDownDelegate=YAHOO.ext.EventManager.wrap(this.handleKeyDown,this,true);this.enable();}
YAHOO.ext.KeyMap.prototype={addBinding:function(config){var keyCode=config.key,shift=config.shift,ctrl=config.ctrl,alt=config.alt,fn=config.fn,scope=config.scope;if(typeof keyCode=='string'){var ks=[];var keyString=keyCode.toUpperCase();for(var j=0,len=keyString.length;j<len;j++){ks.push(keyString.charCodeAt(j));}
keyCode=ks;}
var keyArray=keyCode instanceof Array;var handler=function(e){if((!shift||e.shiftKey)&&(!ctrl||e.ctrlKey)&&(!alt||e.altKey)){var k=e.getKey();if(keyArray){for(var i=0,len=keyCode.length;i<len;i++){if(keyCode[i]==k){fn.call(scope||window,k,e);return;}}}else{if(k==keyCode){fn.call(scope||window,k,e);}}}};this.bindings.push(handler);},handleKeyDown:function(e){if(this.enabled){var b=this.bindings;for(var i=0,len=b.length;i<len;i++){b[i](e);}}},isEnabled:function(){return this.enabled;},enable:function(){if(!this.enabled){this.el.on(this.eventName,this.keyDownDelegate);this.enabled=true;}},disable:function(){if(this.enabled){this.el.removeListener(this.eventName,this.keyDownDelegate);this.enabled=false;}}};YAHOO.ext.util.Observable=function(){};YAHOO.ext.util.Observable.prototype={fireEvent:function(){var ce=this.events[arguments[0].toLowerCase()];if(typeof ce=='object'){return ce.fireDirect.apply(ce,Array.prototype.slice.call(arguments,1));}else{return true;}},addListener:function(eventName,fn,scope,override){eventName=eventName.toLowerCase();var ce=this.events[eventName];if(!ce){throw'You are trying to listen for an event that does not exist: "'+eventName+'".';}
if(typeof ce=='boolean'){ce=new YAHOO.util.CustomEvent(eventName);this.events[eventName]=ce;}
ce.subscribe(fn,scope,override);},delayedListener:function(eventName,fn,scope,delay){var newFn=function(){setTimeout(fn.createDelegate(scope,arguments),delay||1);}
this.addListener(eventName,newFn);return newFn;},bufferedListener:function(eventName,fn,scope,millis){var task=new YAHOO.ext.util.DelayedTask();var newFn=function(){task.delay(millis||250,fn,scope,Array.prototype.slice.call(arguments,0));}
this.addListener(eventName,newFn);return newFn;},removeListener:function(eventName,fn,scope){var ce=this.events[eventName.toLowerCase()];if(typeof ce=='object'){ce.unsubscribe(fn,scope);}},purgeListeners:function(){for(var evt in this.events){if(typeof this.events[evt]=='object'){this.events[evt].unsubscribeAll();}}}};YAHOO.ext.util.Observable.prototype.on=YAHOO.ext.util.Observable.prototype.addListener;YAHOO.ext.util.Config={apply:function(obj,config,defaults){if(defaults){this.apply(obj,defaults);}
if(config){for(var prop in config){obj[prop]=config[prop];}}
return obj;}};if(!String.escape){String.escape=function(string){return string.replace(/('|\\)/g,"\\$1");};};String.leftPad=function(val,size,ch){var result=new String(val);if(ch==null){ch=" ";}
while(result.length<size){result=ch+result;}
return result;};if(YAHOO.util.Connect){YAHOO.util.Connect.setHeader=function(o){for(var prop in this._http_header){if(typeof this._http_header[prop]!='function'){o.conn.setRequestHeader(prop,this._http_header[prop]);}}
delete this._http_header;this._http_header={};this._has_http_headers=false;};}
if(YAHOO.util.DragDrop){YAHOO.util.DragDrop.prototype.defaultPadding={left:0,right:0,top:0,bottom:0};YAHOO.util.DragDrop.prototype.constrainTo=function(constrainTo,pad,inContent){if(typeof pad=='number'){pad={left:pad,right:pad,top:pad,bottom:pad};}
pad=pad||this.defaultPadding;var b=getEl(this.getEl()).getBox();var ce=getEl(constrainTo);var c=ce.dom==document.body?{x:0,y:0,width:YAHOO.util.Dom.getViewportWidth(),height:YAHOO.util.Dom.getViewportHeight()}:ce.getBox(inContent||false);var topSpace=b.y-c.y;var leftSpace=b.x-c.x;this.resetConstraints();this.setXConstraint(leftSpace-(pad.left||0),c.width-leftSpace-b.width-(pad.right||0));this.setYConstraint(topSpace-(pad.top||0),c.height-topSpace-b.height-(pad.bottom||0));}}

YAHOO.ext.util.MixedCollection=function(allowFunctions){this.items=[];this.keys=[];this.events={'clear':new YAHOO.util.CustomEvent('clear'),'add':new YAHOO.util.CustomEvent('add'),'replace':new YAHOO.util.CustomEvent('replace'),'remove':new YAHOO.util.CustomEvent('remove')}
this.allowFunctions=allowFunctions===true;};YAHOO.extendX(YAHOO.ext.util.MixedCollection,YAHOO.ext.util.Observable,{allowFunctions:false,add:function(key,o){if(arguments.length==1){o=arguments[0];key=this.getKey(o);}
this.items.push(o);if(typeof key!='undefined'&&key!=null){this.items[key]=o;this.keys.push(key);}
this.fireEvent('add',this.items.length-1,o,key);return o;},getKey:function(o){return null;},replace:function(key,o){if(arguments.length==1){o=arguments[0];key=this.getKey(o);}
if(typeof this.items[key]=='undefined'){return this.add(key,o);}
var old=this.items[key];if(typeof key=='number'){this.items[key]=o;}else{var index=this.indexOfKey(key);this.items[index]=o;this.items[key]=o;}
this.fireEvent('replace',key,old,o);return o;},addAll:function(objs){if(arguments.length>1||objs instanceof Array){var args=arguments.length>1?arguments:objs;for(var i=0,len=args.length;i<len;i++){this.add(args[i]);}}else{for(var key in objs){if(this.allowFunctions||typeof objs[key]!='function'){this.add(objs[key],key);}}}},each:function(fn,scope){for(var i=0,len=this.items.length;i<len;i++){fn.call(scope||window,this.items[i]);}},eachKey:function(fn,scope){for(var i=0,len=this.keys.length;i<len;i++){fn.call(scope||window,this.keys[i],this.items[i]);}},find:function(fn,scope){for(var i=0,len=this.items.length;i<len;i++){if(fn.call(scope||window,this.items[i])){return this.items[i];}}
return null;},insert:function(index,key,o){if(arguments.length==2){o=arguments[1];key=this.getKey(o);}
if(index>=this.items.length){return this.add(o,key);}
this.items.splice(index,0,o);if(typeof key!='undefined'&&key!=null){this.items[key]=o;this.keys.splice(index,0,key);}
this.fireEvent('add',index,o,key);return o;},remove:function(o){var index=this.indexOf(o);this.items.splice(index,1);if(typeof this.keys[index]!='undefined'){var key=this.keys[index];this.keys.splice(index,1);delete this.items[key];}
this.fireEvent('remove',o);return o;},removeAt:function(index){this.items.splice(index,1);var key=this.keys[index];if(typeof key!='undefined'){this.keys.splice(index,1);delete this.items[key];}
this.fireEvent('remove',o,key);},removeKey:function(key){var o=this.items[key];var index=this.indexOf(o);this.items.splice(index,1);this.keys.splice(index,1);delete this.items[key];this.fireEvent('remove',o,key);},getCount:function(){return this.items.length;},indexOf:function(o){if(!this.items.indexOf){for(var i=0,len=this.items.length;i<len;i++){if(this.items[i]==o)return i;}
return-1;}else{return this.items.indexOf(o);}},indexOfKey:function(key){if(!this.keys.indexOf){for(var i=0,len=this.keys.length;i<len;i++){if(this.keys[i]==key)return i;}
return-1;}else{return this.keys.indexOf(key);}},item:function(key){return this.items[key];},contains:function(o){return this.indexOf(o)!=-1;},containsKey:function(key){return typeof this.items[key]!='undefined';},clear:function(o){this.items=[];this.keys=[];this.fireEvent('clear');},first:function(){return this.items[0];},last:function(){return this.items[this.items.length];}});YAHOO.ext.util.MixedCollection.prototype.get=YAHOO.ext.util.MixedCollection.prototype.item;

YAHOO.ext.util.JSON=new function(){var useHasOwn={}.hasOwnProperty?true:false;var pad=function(n){return n<10?'0'+n:n;};var m={'\b':'\\b','\t':'\\t','\n':'\\n','\f':'\\f','\r':'\\r','"':'\\"','\\':'\\\\'};var encodeString=function(s){if(/["\\\x00-\x1f]/.test(s)){return'"'+s.replace(/([\x00-\x1f\\"])/g,function(a,b){var c=m[b];if(c){return c;}
c=b.charCodeAt();return'\\u00'+